美国银行美股招股说明书(2025-07-15版)

, the Nasdaq-100®Index and Linked to the Least Performing of the Dow Jones Industrial Average®the S&P 500®Index The Auto-Callable Enhanced Return Notes Linked to the Least Performing of the Dow Jones Industrial Average® “Underlying”). Beginning with the July 27, 2026 Call Observation Date, automatically callable at an amount equal to the applicable Call Amount if, on the applicable CallObservation Date, the Observation Value of each Underlying is equal to or greater than its Call Value. The Call Observation Dates and Call Amounts are indicated on Assuming the Notes are not called prior to maturity, if the Ending Value of each Underlying is greater than or equal to 100% of its Starting Value, at maturity, you will receive 150.00% upside exposure to increases in the value of the Least Performing Underlying from its Starting Value. However, assuming the Notes are not called prior to maturity, ifanyUnderlying declines by more than 30% from its Starting Value, at maturity your investment will besubject to 1:1 downside exposure to decreases in the value of the Least Performing Underlying, with up to 100% of the principal at risk. Otherwise, if the Notes are not called prior to maturity and the Ending Value of the Least Performing Underlying is less than 100.00% of its Starting Value but greater than or equal to 70% of itsStarting Value, at maturity you will receive the principal amount of your Notes. Any payment on the Notes is subject to the credit risk of BofA Finance LLC (“BofA Finance” or the “Issuer”), as issuer of the Notes, and Bank of America Corporation (“BAC” or the “Guarantor”), as guarantor of the Notes. The Notes will not be listed on any securities exchange. CUSIP No. 09711JAA7.The initial estimated value of the Notes as of the pricing date is expected to be between $915.00 and $955.00 per $1,000.00 in principal amount of with accuracy. See “Risk Factors” beginning on page PS-8 of this pricing supplement and “Structuring the Notes” on page PS-23of this pricing supplement foradditional information.There are important differences between the Notes and a conventional debt security. Potential purchasers of the Notes should consider the information in “Risk Factors” beginning on page PS-8of this pricing supplement, page PS-5 of the accompanying product supplement, page S-6 ofthe accompanying prospectus supplement, and page 7 of the accompanying prospectus. None of the Securities and Exchange Commission (the “SEC”), any state securities commission, or any other regulatory body has approved or disapproved ofthese securities or determined if this pricing supplement and the accompanying product supplement, prospectus supplement and prospectus is truthful orcomplete. Any representation to the contrary is a criminal offense. Certain dealers who purchase the Notes for sale to certain fee-based advisory accounts may forgo some or all of their selling concessions, fees orcommissions. The public offering price for investors purchasing the Notes in these fee-based advisory accounts may be as low as $975.00 per $1,000.00 in principal amount of Notes. The underwriting discount per $1,000.00 in principal amount of Notes may be as high as $25.00, resulting in proceeds, before expenses, to BofA Finance of In addition to the underwriting discount above, if any, an affiliate of BofA Finance will pay a referral fee of up to $16.00 per $1,000.00 in principal amount ofthe Notes in connection with the distribution of the Notes to other registered broker-dealers. BofA Finance The Notes will be issued in minimum denominations of $1,000.00 and whole multiples of $1,000.00 in excess thereof. Approximately 5 years, unless previously automatically called.Underlyings:The Dow Jones Industrial Average®(Bloomberg symbol: “INDU”), the Nasdaq-100® Valuation Date*:July 25, 2030, subject to postponement as described under “Description of the Notes—Certain Terms of the Notes—Events Relating toObservation Dates” in the accompanying product supplement.Maturity Date*:July 30, 2030 Starting Value:With respect to each Underlying, its closing level on the pricing date.ObservationWith respect to each Underlying, its closing level on the applicable Call Observation Date. With respect to each Underlying, its closing level on the Valuation Date. With respect to each Underlying, 100.00% of its Starting Value. Threshold Value:With respect to each Underlying, 70.00% of its Starting Value.Automatic Call:Beginning with the July 27, 2026 Call Observation Date, all (but not less than all) of the Notes will be automatically called at an amountequal to the applicable Call Amount if the Observation Value of each Underlying is greater than or equal to its Call Value on any Call Observation Date. If the Notes are automatically called, the applicable Call Amount will be paid on the applicable Call Payment Date. Nofurther amounts will be payable following an Automatic Call. Examples and Auto-Callable Enhanced Return Notes Table Underl